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Onion vs Bell pepper - In-Depth Nutrition Comparison

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A recap on differences between Onion and Bell pepper

  • Onion has less Vitamin C, Vitamin B6, and Vitamin K.
  • Bell pepper covers your daily Vitamin C needs 81% more than Onion.
  • Bell pepper contains 2 times less Sugar than Onion. Onion contains 4.24g of Sugar, while Bell pepper contains 2.4g.

Food varieties used in this article are Onions, raw and Peppers, sweet, green, raw.

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Onion vs Bell pepper infographic
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Mineral Comparison

Mineral comparison score is based on the number of minerals by which one or the other food is richer. The "coverage" chart below show how much of the daily needs can be covered by 300 grams of the food
Contains more Calcium +130%
Contains more Zinc +30.8%
Contains more Phosphorus +45%
Contains more Iron +61.9%
Contains more Potassium +19.9%
Contains more Copper +69.2%
Contains less Sodium -25%
Equal in Magnesium - 10
Iron Calcium Potassium Magnesium Copper Zinc Phosphorus Sodium 8% 7% 13% 8% 14% 5% 13% 1%
Iron Calcium Potassium Magnesium Copper Zinc Phosphorus Sodium 13% 3% 16% 8% 22% 4% 9% 1%
Contains more Calcium +130%
Contains more Zinc +30.8%
Contains more Phosphorus +45%
Contains more Iron +61.9%
Contains more Potassium +19.9%
Contains more Copper +69.2%
Contains less Sodium -25%
Equal in Magnesium - 10

Vitamin Comparison

Vitamin comparison score is based on the number of vitamins by which one or the other food is richer. The "coverage" chart below show how much of the daily needs can be covered by 300 grams of the food
Onion
2
:
Contains more Vitamin B5 +24.2%
Contains more Folate +90%
Contains more Vitamin C +986.5%
Contains more Vitamin A +18400%
Contains more Vitamin E +1750%
Contains more Vitamin B1 +23.9%
Contains more Vitamin B3 +313.8%
Contains more Vitamin B6 +86.7%
Contains more Vitamin K +1750%
Equal in Vitamin B2 - 0.028
Vitamin C Vitamin A Vitamin E Vitamin D Vitamin B1 Vitamin B2 Vitamin B3 Vitamin B5 Vitamin B6 Vitamin B12 Vitamin K Folate 25% 1% 1% 0% 12% 7% 3% 8% 28% 0% 1% 15%
Vitamin C Vitamin A Vitamin E Vitamin D Vitamin B1 Vitamin B2 Vitamin B3 Vitamin B5 Vitamin B6 Vitamin B12 Vitamin K Folate 268% 23% 8% 0% 15% 7% 9% 6% 52% 0% 19% 8%
Contains more Vitamin B5 +24.2%
Contains more Folate +90%
Contains more Vitamin C +986.5%
Contains more Vitamin A +18400%
Contains more Vitamin E +1750%
Contains more Vitamin B1 +23.9%
Contains more Vitamin B3 +313.8%
Contains more Vitamin B6 +86.7%
Contains more Vitamin K +1750%
Equal in Vitamin B2 - 0.028

Vitamin and Mineral Summary Scores

The summary score is calculated by summing up the daily values contained in 300 grams of the product. Obviously the more the food fulfills human daily needs, the more the summary score is.
Vitamin Summary Score
8
Onion
34
Bell pepper
Mineral Summary Score
8
Onion
9
Bell pepper

Macronutrients Comparison

Macronutrient comparison charts compare the amount of protein, total fats, and total carbohydrates in 300 grams of the food. The displayed values show how much of the daily needs can be covered by 300 grams of food.
Protein
7%
Onion
5%
Bell pepper
Carbohydrates
9%
Onion
5%
Bell pepper
Fats
0%
Onion
1%
Bell pepper

Comparison summary table

Pay attention to the most right column. It shows the amounts side by side, making it easier to realize the amount of difference.
Onion Bell pepper
Lower in Saturated Fat ok
Lower in glycemic index ok
Lower in price ok
Lower in Sugar ok
Lower in Sodium ok
Rich in vitamins ok
Lower in Cholesterol Equal
Rich in minerals Equal

Which food is preferable for your diet?

ok
ok
is better in case of low diet
Onion Bell pepper
Low Calories diet ok
Low Fats diet ok
Low Carbs diet ok
Low glycemic index diet ok

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Comparison summary

Which food is lower in Saturated Fat?
Onion
Onion is lower in Saturated Fat (difference - 0.016g)
Which food is lower in glycemic index?
Onion
Onion is lower in glycemic index (difference - 17)
Which food is cheaper?
Onion
Onion is cheaper (difference - $0.1)
Which food is lower in Sugar?
Bell pepper
Bell pepper is lower in Sugar (difference - 1.84g)
Which food contains less Sodium?
Bell pepper
Bell pepper contains less Sodium (difference - 1mg)
Which food is richer in vitamins?
Bell pepper
Bell pepper is relatively richer in vitamins
Which food contains less Cholesterol?
?
The foods are relatively equal in Cholesterol (0 mg)
Which food is richer in minerals?
?
It cannot be stated which food is richer in vitamins. See the charts below for detailed information. See the charts below for detailed information. See the charts below for detailed information.

All nutrients comparison - raw data values

Nutrient Onion Bell pepper Opinion
Calories 40 20 Onion
Protein 1.1 0.86 Onion
Fats 0.1 0.17 Bell pepper
Vitamin C 7.4 80.4 Bell pepper
Net carbs 7.639999866485596 2.940000057220459 Onion
Carbs 9.34 4.64 Onion
Cholesterol 0 0
Vitamin D 0 0
Iron 0.21 0.34 Bell pepper
Calcium 23 10 Onion
Potassium 146 175 Bell pepper
Magnesium 10 10
Sugar 4.24 2.4 Bell pepper
Fiber 1.7 1.7
Copper 0.039 0.066 Bell pepper
Zinc 0.17 0.13 Onion
Starch 0 0
Phosphorus 29 20 Onion
Sodium 4 3 Bell pepper
Vitamin A 2 370 Bell pepper
Vitamin E 0.02 0.37 Bell pepper
Vitamin D 0 0
Vitamin B1 0.046 0.057 Bell pepper
Vitamin B2 0.027 0.028 Bell pepper
Vitamin B3 0.116 0.48 Bell pepper
Vitamin B5 0.123 0.099 Onion
Vitamin B6 0.12 0.224 Bell pepper
Vitamin B12 0 0
Vitamin K 0.4 7.4 Bell pepper
Folate 19 10 Onion
Trans Fat 0 0
Saturated Fat 0.042 0.058 Onion
Monounsaturated Fat 0.013 0.008 Onion
Polyunsaturated fat 0.017 0.062 Bell pepper
Tryptophan 0.014 0.012 Onion
Threonine 0.021 0.036 Bell pepper
Isoleucine 0.014 0.024 Bell pepper
Leucine 0.025 0.036 Bell pepper
Lysine 0.039 0.039
Methionine 0.002 0.007 Bell pepper
Phenylalanine 0.025 0.092 Bell pepper
Valine 0.021 0.036 Bell pepper
Histidine 0.014 0.01 Onion
Fructose 1.29 1.12 Onion

References

The source of all the nutrient values on the page (excluding the main article the sources for which are presented separately if present) is the USDA's FoodCentral. The exact links to the foods presented on this page can be found below.

  1. Onion - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170000/nutrients
  2. Bell pepper - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170427/nutrients

All the Daily Values are presented for males aged 31-50, for 2000 calorie diets.

Data provided by FoodStruct.com should be considered and used as information only. Please consult your physician before beginning any diet.